12729697 has 2 divisors, whose sum is σ = 12729698. Its totient is φ = 12729696.

The previous prime is 12729679. The next prime is 12729709. The reversal of 12729697 is 79692721.

Together with previous prime (12729679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10182481 + 2547216 = 3191^2 + 1596^2 .

It is an emirp because it is prime and its reverse (79692721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12729697 is a prime.

It is not a weakly prime, because it can be changed into another prime (12729797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364848 + 6364849.

It is an arithmetic number, because the mean of its divisors is an integer number (6364849).

Almost surely, 2^12729697 is an apocalyptic number.

It is an amenable number.

12729697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12729697 is an equidigital number, since it uses as much as digits as its factorization.

12729697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 43.

The square root of 12729697 is about 3567.8700929266. The cubic root of 12729697 is about 233.4923675453.

The spelling of 12729697 in words is "twelve million, seven hundred twenty-nine thousand, six hundred ninety-seven".